#include<stdio.h>

struct area{
    int a c;
};
int main()
{
    struct area sq;
    scanf("%d",&sq.a);
    if(sq.a<=0)
    {
        printf("Invalid input");
        return 0;}
        {
    sq. c=sq.a*sq.a;
    printf("%d sqaure meters",c);
}
return 0;
}